The Viavito Olympic training collars are made to help you train safely and focus on your reps. These solid cast iron collars are compatible with 2” (5cm) Olympic barbells and dumbbell bars and have a bent ‘L-screw’ for easy installation and removal. The collars are made to hold your weight plates firmly in place and feature a chrome finish delivering enhanced durability. They are suitable for powerlifting, CrossFit, weightlifting and any other Olympic barbell workout. Plus, the collars offer a secure fit and quick weight plate changes. They are supplied as a pair.